Recently, leading officials of Qinghai Provincial People's Government conducted an inspection tour along Qinghai Lake and held an on-site work meeting. They emphasized that Qinghai Lake, known as the "Sapphire of the Plateau", should be protected as meticulously as protecting our own eyes, and pledged to build a solid ecological security barrier on the Qinghai-Xizang Plateau with the strictest environmental standards.
With 20 years of in-depth expertise in harmless solid waste disposal, Holy Shield has built a benchmark project of domestic waste high-temperature pyrolysis and gasification in Dulan County, Qinghai. Equipped with tailor-made plateau-adapted waste incinerators, the company has overcome difficulties in solid waste treatment in alpine regions and created a replicable and implementable green model for the harmless treatment, volume reduction and resource utilization of domestic waste across Qinghai.
Solving Plateau Solid Waste Treatment Difficulties with Customized High-Altitude Equipment
Featuring high altitude, low air pressure, thin oxygen and sharp temperature swings between day and night, the harsh plateau climate of Qinghai causes common drawbacks in traditional waste incinerators, including incomplete combustion, high energy consumption, excessive flue gas emission and frequent breakdowns. Sitting at an altitude of 4,099 meters, the Dulan County project sets stringent requirements on the stability, environmental adaptability and emission performance of solid waste treatment facilities and supporting waste incinerators.
Based on the core 3T+E high-temperature pyrolysis and gasification technology included in the National Science and Technology Achievement Database, Holy Shield comprehensively optimizes equipment configuration of its proprietary waste incinerators tailored to extreme plateau operating conditions:
Intelligent High-Altitude Air Distribution Adaptation: Fitted with an AI intelligent combustion control system, the waste incinerator dynamically adjusts air intake ratio via variable-frequency air distribution technology to tackle incomplete combustion caused by low pressure and oxygen deficiency. It keeps the temperature of the secondary combustion chamber steadily above 850℃ with flue gas retention time longer than 2 seconds to realize thorough pyrolysis of domestic waste and curb the generation of dioxins and other hazardous substances at source.
Full-chain Multi-stage Flue Gas Purification: Integrated with cyclone dust removal, dry deacidification, activated carbon adsorption and baghouse dust removal technologies, the waste incinerator achieves a tested dioxin emission concentration as low as 0.035ngTEQ/Nm³. The figure is far below the national limit of 0.1ngTEQ/Nm³ specified in GB18485-2014 Standard for Pollution Control on Municipal Solid Waste Incineration as well as Qinghai’s local emission standards, completely preventing secondary pollution to plateau air, frozen soil and underground water from exhaust gas.
Full-cycle Low-energy & Easy-maintenance Design: The modular and lightweight waste incinerator fits complicated construction conditions on the plateau. The company provides full-unit warranty and lifelong technical support alongside a 2-hour emergency maintenance response mechanism. Regular on-site inspections, maintenance and operator training are arranged in view of Qinghai’s remote and frigid geographic features to guarantee stable year-round operation of incineration equipment all year round.
Since commissioning, the project has achieved a waste reduction rate of over 95% and full harmless disposal of local domestic waste, completely replacing extensive landfill. It effectively avoids ecological hazards such as soil and groundwater contamination triggered by landfill leachate and acts as a benchmark for integrated solid waste management and ecological protection for counties around the Qinghai Lake Basin.
